Transmission shaft sleeve turning tool clamp structure

Abstract

The utility model discloses a transmission shaft sleeve turning work fixture structure, and particularly relates to the technical field of transmission shaft machining, the transmission shaft sleeve turning work fixture structure comprises an expansion core shaft and a bearing seat, one end of the expansion core shaft penetrates through the bearing seat, the expansion core shaft is fixedly sleeved with two conical blocks, the two conical blocks are both located in the bearing seat, a fastening assembly is arranged in the bearing seat, and the fastening assembly is connected with the expansion core shaft. The fastening assembly comprises four tension bolts and two expansion sleeves. The two taper blocks are sequentially sleeved with the two expansion sleeves, then the four tension bolts are sequentially inserted into the two expansion sleeves, the expansion core shaft is sleeved with the bearing seat, the bearing seat is tensioned on the expansion core shaft through the four tension bolts, the rejection rate of products in the machining process is greatly reduced, the stability of the product quality is improved, and the production efficiency is improved. And meanwhile, the labor intensity of processing personnel is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shaft processing, and more specifically, to a tooling fixture structure for turning a transmission shaft sleeve. Background Art

[0002] The transmission sleeve is the main rotating component of the transmission part of the impact crusher. The transmission sleeve is installed on the fixed transmission shaft seat. Bearings are installed in the bearing seat holes at both ends of the transmission sleeve, and the transmission shaft is installed in the bearing holes at both ends. Due to the different lengths of the transmission shaft, the current fixture cannot fix the transmission shafts of different lengths, which affects the staff's processing of the transmission shaft and has a low scope of application.

[0003] After searching, a Chinese patent with announcement number CN215432629U discloses a fixing fixture for processing a transmission shaft. By setting an adjustment mechanism, a motor drives a bidirectional screw to rotate, and the bidirectional screw causes two external threaded barrels connected by threads to move in relative directions, while the threaded barrel causes an external slider to move and drives a clamping block on the top of the slider to move in relative directions. The distance between the two clamping blocks can be adjusted according to the length of the transmission shaft, which is convenient for clamping transmission shafts of different sizes and improves the scope of use.

[0004] When the above patent is in use, the buffer pad at the bottom of the pressure plate fits with the buffer pad at the top of the clamping block, so that the transmission shaft is clamped between the two buffer pads, and then the transmission shaft is clamped and fixed. However, it is difficult to ensure its accuracy, and the scrap rate is high, the quality is extremely unstable, and the labor intensity of the processing personnel is high. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a tooling fixture structure for turning a transmission shaft sleeve, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission shaft sleeve turning tooling fixture structure, including an expanding mandrel and a bearing seat, and one end of the expanding mandrel passes through the bearing seat, and two cone blocks are provided on the fixed sleeve of the expanding mandrel, and the two cone blocks are both located inside the bearing seat, and a fastening assembly is provided inside the bearing seat, and the fastening assembly includes four tightening bolts and two expanding sleeves.

[0007] Furthermore, the two expansion sleeves are movably mounted on the two cone blocks, and one end of the four tensioning bolts passes through the two expansion sleeves respectively.

[0008] Furthermore, one ends of the four tensioning bolts are respectively inserted into the two cone blocks, and the four tensioning bolts are respectively threadedly connected to the two cone blocks.

[0009] Furthermore, each of the four tensioning bolts is provided with a gasket on a movable sleeve, and one side of the four gaskets is in contact with the two expansion sleeves respectively.

[0010] It can be seen that in the above technical solution, the firmness between the tensioning bolt and the expansion sleeve is improved.

[0011] Furthermore, tapered grooves are provided on the opposite sides of the two expansion sleeves.

[0012] Furthermore, one side of the two cone blocks facing each other is fixedly connected with a reinforcement block, and the two reinforcement blocks are fixedly sleeved on the core expansion shaft.

[0013] It can be seen that in the above technical solution, the firmness between the cone block and the core expansion shaft is improved.

[0014] Furthermore, one side of the bearing seat is tapered.

[0015] It can be seen that in the above technical solution, one end of the bearing seat is conveniently positioned.

[0016] Technical effects and advantages of the utility model:

[0017] The utility model sleeves two expansion sleeves on two cone blocks in sequence, and then inserts four tensioning bolts into the two expansion sleeves in sequence, connects the two expansion sleeves with the two cone blocks through the four tensioning bolts, and the two expansion sleeves are in a relaxed state at this time, and then sets the bearing seat sleeve on the expansion mandrel shaft, and the outer sides of the two expansion sleeves are in contact with the inner wall of the bearing seat, and tightens the bearing seat on the expansion mandrel shaft through the four tensioning bolts, which greatly reduces the scrap rate of the product during mechanical processing, improves the stability of product quality, and also reduces the labor intensity of the processing personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of a tooling fixture structure for machining a transmission shaft sleeve according to the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional assembly structure of the expansion mandrel and the expansion sleeve of a tooling fixture structure for machining a transmission shaft sleeve of the utility model;

[0021] Figure 3It is a schematic diagram of the cross-sectional assembly structure of the expansion mandrel and the cone block of a tooling fixture structure for machining a transmission shaft sleeve of the utility model;

[0022] Figure 4 It is a cross-sectional view of an expansion sleeve structure of a tooling fixture structure for machining a transmission shaft sleeve of the utility model.

[0023] In the figure: 1. expansion mandrel; 2. tightening bolt; 3. expansion sleeve; 4. bearing seat; 5. gasket; 6. cone block. DETAILED DESCRIPTION

[0024] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Refer to the instruction manual Figure 1-4 A transmission shaft sleeve machining tooling fixture structure of this embodiment includes an expanding mandrel 1 and a bearing seat 4, and one end of the expanding mandrel 1 passes through the bearing seat 4, two cone blocks 6 are fixedly sleeved on the expanding mandrel 1, and the two cone blocks 6 are both located inside the bearing seat 4, and a fastening component is provided inside the bearing seat 4, the fastening component includes four tightening bolts 2 and two expanding sleeves 3, the two expanding sleeves 3 are movably sleeved on the two cone blocks 6, one end of the four tightening bolts 2 passes through the two expanding sleeves 3, one end of the four tightening bolts 2 is respectively inserted into the two cone blocks 6, and the four tightening bolts 2 are respectively threadedly connected with the two cone blocks 6.

[0026] Furthermore, washers 5 are movably sleeved on the four tensioning bolts 2, and one side of the four washers 5 is in contact with the two expansion sleeves 3 respectively to improve the stability between the tensioning bolts 2 and the expansion sleeves 3, and a conical groove is provided on the opposite side of the two expansion sleeves 3.

[0027] Furthermore, a reinforcing block is fixedly connected to the opposite sides of the two cone blocks 6 , and the two reinforcing blocks are fixedly sleeved on the core expansion shaft 1 to improve the firmness between the cone blocks 6 and the core expansion shaft 1 .

[0028] Furthermore, one side of the bearing seat 4 is tapered to facilitate positioning of one end of the bearing seat 4 .

[0029] The method of using this embodiment is:

[0030] When in use, the two expansion sleeves 3 are sequentially sleeved on the two cone blocks 6, and then the four tensioning bolts 2 are sequentially inserted into the two expansion sleeves 3, and the two expansion sleeves 3 are connected to the two cone blocks 6 through the four tensioning bolts 2, and the two expansion sleeves 3 are in a relaxed state at this time, and then the bearing seat 4 is sleeved on the expansion core shaft 1, and the outer sides of the two expansion sleeves 3 are in contact with the inner wall of the bearing seat 4, and then the four tensioning bolts 2 are gradually tightened. As the tensioning bolts 2 are gradually tightened, the two expansion sleeves 3 are expanded under the action of the cone blocks 6 at both ends of the expansion core shaft 1, and the bearing seat 4 is tightened on the expansion core shaft 1, realizing the positioning and clamping of the expansion core shaft 1. It is clamped on the metal cutting lathe by positioning and clamping, without turning around (without exchanging the left and right datums) and aligning (without exchanging the inner and outer circle datums), which greatly reduces the scrap rate of the product during mechanical processing, improves the stability of product quality, and also reduces the labor intensity of the processing personnel.

[0031] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A tooling fixture structure for machining a transmission shaft sleeve, characterized in that: It comprises an expansion mandrel shaft (1) and a bearing seat (4), wherein one end of the expansion mandrel shaft (1) passes through the bearing seat (4), a fixed sleeve on the expansion mandrel shaft (1) is provided with two cone blocks (6), and both cone blocks (6) are located inside the bearing seat (4), and a fastening component is provided inside the bearing seat (4), and the fastening component comprises four tightening bolts (2) and two expansion sleeves (3).

2. A tooling fixture structure for machining a transmission shaft sleeve according to claim 1, characterized in that: The two expansion sleeves (3) are movably mounted on the two cone blocks (6), and one end of the four tension bolts (2) passes through the two expansion sleeves (3).

3. The tooling fixture structure for machining a transmission shaft sleeve according to claim 1, characterized in that: One end of the four tension bolts (2) is respectively inserted into the two cone blocks (6), and the four tension bolts (2) are respectively threadedly connected to the two cone blocks (6).

4. The tooling fixture structure for machining a transmission shaft sleeve according to claim 1, characterized in that: Gaskets (5) are movably sleeved on the four tension bolts (2), and one side of the four gaskets (5) is in contact with the two expansion sleeves (3) respectively.

5. The tooling fixture structure for machining a transmission shaft sleeve according to claim 1, characterized in that: Conical grooves are provided on the opposite sides of the two expansion sleeves (3).

6. The tooling fixture structure for machining a transmission shaft sleeve according to claim 1, characterized in that: The two cone blocks (6) are both fixedly connected to one side facing each other with a reinforcement block, and the two reinforcement blocks are both fixedly sleeved on the core expansion shaft (1).

7. The tooling fixture structure for machining a transmission shaft sleeve according to claim 1, characterized in that: One side of the bearing seat (4) is tapered.

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